Putting the Clamp on Hemorrhage

Transcription

DECEMBER2013
Putting the Clamp
on Hemorrhage
How a simple, effective point-of-injury tool
will transform the way bleeding
is controlled in the field
An advertorial supplement to JEMS, sponsored by iTraumaCare
FAST. SAFE. EFFECTIVE.
TM
Introducing an innovative breakthrough in hemorrhage control! The iTClamp is
a trauma clamp device for the temporary control of severe bleeding. The device
seals the edges of a wound closed to create a stable clot to mitigate further blood
loss until the wound can be surgically repaired. Pre-clinical trials showed the
iTClamp to be superior to wound packing in terms of patient survival, survival
time and total blood loss.1 Applied within seconds, the iTClamp is ideal for
emergency medical personnel.
Visit iTraumaCare.com, email us at [email protected] or call
1-855-774-4526, option 3 and ﬁnd out more.
iTClampTM50 Hemorrhage
Control Device
iTraumaCare.com
The iTClampTM50 device is currently for sale in the United States, European Union and Canada.
1 Filips D, Logsetty S, Tan J et al. The iTClamp controls junctional bleeding in a lethal swine exsanguination model.
Prehospital Emergency Care 2013;17:526–532
•contents•
•introduction•
Every Red Blood
Cell Counts
4
Stop the Bleeding
Understanding the history & epidemiology
of hemorrhage control
By Alison Kabaroff, CD, MD, FRCPC
Early & effective hemorrhage
control is essential to saving lives
8
By Dennis Filips, MD,
CEO & founder, iTraumaCare
Point-of-Care Hemorrhage Control
Uncontrolled bleeding is one of the leading causes
of death in civilian and military environments, second
only to central nervous system injury. Every red blood
cell counts; effective hemorrhage control at the earliest
moment is critical to patient survival. Early control of
hemorrhage reduces the negative downstream consequences associated with substantial blood loss, including shock, late mortality and multiple organ failure.
Both Tactical Combat Casualty Care guidelines and
the Hartford Consensus for Mass Shooter Events identify controlling compressible hemorrhage as the highest
medical priority for improving survival. Now there is a
new, simple and effective tool that will transform the
way bleeding, particularly difficult-to-control bleeding,
is managed in the field: the iTClamp50, an FDA-cleared
hemorrhage-control device that causes blood to clot
rapidly beneath the skin where it is applied. The pressure that results under the clamp site causes the natural compression of “bleeders” beneath the skin surface
and coagulates blood, resulting in the important cessation of bleeding. It can be used as a first-line device
or combined with other hemorrhage-control strategies,
such as hemostatic agents, tourniquets, junctional tourniquets and tranexamic acid.
The iTClamp adds a critical new adjunct to the hemorrhage control toolkit, allowing first responders and
other BLS/ALS team members to address critical bleeding. The speed of application (<5 seconds) allows you
to rapidly treat a patient and then deal with additional
injuries on that same patient or other patients, such as
in a mass-casualty, disaster or USAR situation.
Read this in-depth advertorial supplement to JEMS
carefully and discuss the iTClamp with your medical
director, because it represents a new form of rapid
hemorrhage control that could make a big impact on
trauma morbidity and mortality in your EMS operation.
Historical perspective & the need
for a common-sense approach
By Edward T. Dickinson, MD, NREMT-P, FACEP
11
From Battlefields to City Streets
The application of recent military
trauma concepts to civilian EMS
By Peter P. Taillac, MD, FACEP &
Gerard S. Doyle, MD, MPH
15
A New Tool in the Box
First U.S. field use of the iTClamp proves its value
in treating hypoxia from a hemorrhagic standpoint
By Jason L. Clark, CMTE, NRP, FP-C, CCEMT-P
18
How the iTClamp Works
Life-saving power in a small, easy-to-use
hemorrhage-control device
By Joe Holley, MD, FACEP
20
Training & Speed Are Crucial
Options, issues & training to prevent death
from massive blood loss
SENIOR VICE PRESIDENT/GROUP PUBLISHER Lyle Hoyt
ADVERTISING SALES Cindi Richardson
EDITOR-IN-CHIEF A.J. Heightman, MPA, EMT-P
ART DIRECTOR Josh Troutman
MANAGING EDITOR Shannon Pieper
COVER PHOTO Hospital Wing, Memphis, Tenn.
PUTTING THE CLAMP ON HEMORRHAGE is an advertorial supplement sponsored by iTraumaCare and published by PennWell Corporation, 1421 S. Sheridan Road, Tulsa, OK 74112;
918-835-3161 (ISSN 0197-2510, USPS 530-710). Copyright 2013 PennWell Corporation. No material may be reproduced or uploaded on computer network services without the expressed
permission of the publisher. Subscription information: To subscribe to JEMS, visit www.jems.com. Advertising information: Rates are available at www.jems.com/about/advertise or by
request from JEMS Advertising Department at 4180 La Jolla Village Drive, Ste. 260, La Jolla, CA 92037-9141l 800-266-5367.
DECEMBER2013
3
A Supplement to JEMS
The problem of major bleeding continues
to stymie prehospital providers. Massive
hemorrhage is second only to neurologic
injuries as a cause of death due to trauma.
Stop the
Bleeding
PHOTO MARK IDE
Understanding the history
& epidemiology
of hemorrhage control
By Alison Kabaroff, CD, MD, FRCPC
F
Worldwide Killer
rom the beginning of the evolution of
humans, the ability to stop bleeding
has been paramount to our survival.
Humans have managed to survive severe trauma
for thousands of years. Written records of
medical interventions date back to the ancient
Greeks and Romans.
In the first century AD, Greek physician
Rufus of Ephesus described all methods of
hemorrhage control known to exist in the
ancient world: digital compression, styptics (i.e.,
hemostatic agents), cautery, torsion/tourniquet
and ligature, or ligation of blood vessels.1 His
assessment was very detailed and, in fact, the
same techniques are still used today in prehospital and hospital settings.
In some respects, little has changed for first
responders regarding their options for hemorrhage control, and yet the problem of major
bleeding continues to stymie both prehospital
and hospital care providers.
Traumatic and non-traumatic causes of hemorrhage carry significant mortality and morbidity.
Approximately 5 million people die every year
around the world from accidental and nonaccidental trauma, making trauma the leading
cause of death in people under the age of 45.2
Exsanguination accounts for approximately
one-third of these deaths and the majority,
which are due to exsanguination, occur within
the first 48 hours.3,4 Massive hemorrhage is second only to neurologic injuries as a cause of
death due to trauma.5
Hemorrhage carries with it not only the threat
of immediate death due to blood loss, but also
increased mortality due to multi-organ failure
and sepsis.6 Massive blood loss often starts a cascade of shock, inflammation and coagulopathy
that can worsen blood loss and foil attempts at
resuscitation. Despite advances in transfusion
medicine and medical care, massive blood loss is
DECEMBER2013
4
The wars in Iraq and Afghanistan have
seen the development of granular
hemostatic agents, such as QuickClot,
as well as impregnated gauze
products, such as HemCon
and CombatGauze.
rhage is rare (0.02% of traumas), but greater than 50% of
those deaths were potentially
preventable with tourniquets.12
PHOTO COURTESY NORTH AMERICAN RESCUE
PHOTO A.J. HEIGHTMAN
still a major cause of mortality—whether you’re
in a third-world country or even a first-world one.
In addition, significant morbidity is associated with massive blood loss. Massive transfusion is defined as replacement of a patient’s
entire circulating blood volume in less than 24
hours. One recently published study looked at
more than 900,000 patients undergoing massive transfusion and non-cardiac surgery. The
researchers found more than 54% had at least
one major, non-fatal complication.7
Complications of massive transfusion include
coagulopathy, hypocalcaemia, hyperkalemia,
hypothermia and transfusion-related lung injury
(TRALI).8 Coagulopathy may be dilutional if
the patient is only transfused with packed red
cells or secondary to disseminated intravascular coagulation (DIC) if the patient has delayed
resuscitation or inadequate perfusion.
Hypocalcaemia can occur when citrate is used
in packed red cells, platelets and fresh frozen
plasma. Citrate binds calcium, and though it’s
metabolized by the liver, this is slowed if the
patient is hypothermic. Hypocalcaemia can also
cause hypotension, further exacerbating inadequate perfusion.
Hyperkalemia is rare but can occur if the
patient is acidemic or hypothermic. Hypothermia can occur because packed red cells are
stored at 4 degrees Celsius and may be difficult
to rewarm quickly.9 TRALI occurs as an immune
or non-immune related process and presents
as acute respiratory distress syndrome (ARDS)
during or within six hours of transfusion.10
Massive transfusion protocols have been
developed to try to combat some of the complications associated with massive hemorrhage
and transfusion. Despite this, patients who
undergo massive transfusion are more likely to
suffer infectious and respiratory complications
and more likely to die.7
One Canadian study of deaths due to trauma
at a Level 1 trauma center found that up to 16%
of deaths would have been preventable with
earlier recognition of bleeding and more rapid
and effective hemorrhage control.11 In Canada,
that would amount to approximately 2,400
additional lives saved per year (an equivalent of
approximately 24,000 U.S. deaths).
The majority of these preventable deaths
are from unrecognized bleeding in the abdomen and pelvis. There are, however, preventable deaths due to isolated extremity trauma
every year as well. A review of trauma patients
presenting to two U.S. trauma centers suggests
that death due to isolated extremity hemor-
History of Hemorrhage Control
Getting medical personnel to recognize the
seriousness and significance of hemorrhage
has been a problem throughout the history of
trauma care. Oddly, from the ancient world until
the early 20th century, “bloodletting” was actually prescribed to treat a multitude of ailments
including hemorrhage. It was common practice
prior to surgery, and prior to amputation, for
doctors to first “bleed” a patient the approximate
amount of blood contained in the limb in an
effort to decrease inflammation and infection.13
Bloodletting was considered an effective treatment to “cause hemorrhages to cease” until the
late 1800s, and Sir William Osler still advocated
bloodletting in the Principles and Practice of Medicine in 1923.14 Interestingly, this was at the same
time that transfusion medicine and blood-banking was becoming safe and an accepted practice.15
George Washington is a famous example of
how death was hastened by bloodletting. After
becoming ill, Washington called for a physician
to bleed him. He underwent the procedure three
times, having approximately 3.7 L of blood
removed in 10 hours. He died shortly thereafter.16 Although therapeutic phlebotomy is still
in use to treat hemochromatosis, it thankfully
is no longer part of trauma care.
Methods of controlling hemorrhage have
fallen into and out of favor throughout history,
but the proven principle of direct pressure has
been in use for thousands of years. Some of the
DECEMBER2013
5
The military has prioritized the control of massive hemorrhage even before dealing with airway or ventilation
issues since the 1990s, a result of the recent finding that most battle casualties die within 10 minutes of
being wounded and the majority of those die from exsanguination. However, civilian EMS has still not
completely accepted this change.
earliest written accounts of the management
of wounds by direct pressure go back to Homer’s Iliad. Application of salve and dressings are
described after irrigation. Cautery and the use of
“seething oil” were popular for control of hemorrhage for centuries—right up until the American
Civil War, when ligature and amputation became
favored.17
their early use, particularly if the tourniquet is
applied before the onset of shock. An article by
Kragh et al in 2009 suggests that survival rates
when tourniquets are applied are as high as 90% vs.
only 10% when shock is present.22
Hemostatic Dressings
The wars in Iraq and Afghanistan have also
seen the development of a variety of hemostatic dressing agents. These agents vary from
powdered granules poured into a wound, such
as early versions of QuikClot, to impregnated
gauze, such as HemCon and CombatGauze.
These agents all require direct pressure for 2–5
minutes for maximum effectiveness and have
not been found to be more superior to plain
gauze for wound packing in many instances.23
The Controversy of Tourniquets
Tourniquets, now returning to EMS units
throughout the world, have been a source of
controversy since the birth of medicine. During
the Roman Empire, the surgeon Galen of Pergamon denounced them as “forcing more blood
from the wound.” During the Civil War, Confederate surgeon Julian John Chisolm described
them as “of no avail.”18
In the Second World War and Korean War,
pressure dressings became first-line therapy,
with tourniquets reserved for last resort. In the
past several years, tourniquets have come back
into favor with the knowledge gained during
the wars in Iraq and Afghanistan.19
In recent articles relative to the conflicts in
Iraq and Afghanistan, no cases of amputation
were found to be a result of tourniquet application alone, and one case report described a soldier with prolonged tourniquet application of 16
hours with no neurovascular complications.20,21
Research from the wars in Iraq and Afghanistan would suggest that not only are there low
complication rates with tourniquet use but
also significant survival benefit in patients
with severe extremity trauma associated with
Our Current Approach to Trauma Care
Just as the agents used for hemostasis have
evolved, so too has the approach to trauma and
bleeding. The first description of the airway,
breathing and circulation (ABCs) approach to
patients was in the 1950s by Peter Safar, MD.24
This was followed until James Styner, MD, FACS,
pioneered the advanced trauma life support
(ATLS) approach of airway, breathing, circulation, disability and exposure (ABCDE) in 1976.25
In the years since, the emphasis has been
that airway and breathing issues take priority
over circulation issues and dressing wounds.
Although this approach may be the right one
for the majority of trauma patients, it can create delays in managing hemorrhage if providers
are too focused on the airway and not enough
DECEMBER2013
6
on controlling active bleeding. A concurrent
approach, if possible, is best, and most trauma
teams are designed with that in mind.
Recently there’s been another shift back
toward prioritizing the control of massive hemorrhage even before dealing with airway or ventilation issues. The military has taught the massive hemorrhage, airway, respirations, circulation
and hypothermia (MARCH) concept since the
mid-1990s, but this approach has really come to
the forefront in the past decade. This is a result
of the recent finding that most battle casualties
die within 10 minutes of being wounded and the
majority of those die from exsanguination.26,27 By
placing the emphasis on stopping major bleeding first, the aim is to reduce the need for massive
transfusion and prevent complications associated with major blood loss.
This necessitates a shift in thinking. For years,
EMS providers have been taught that there’s no
point in dressing a wound if there’s no airway.
And it’s true that 2–5 minutes of direct pressure is too long if the patient is apneic or has an
airway obstruction. However, quick tourniquet
application takes only seconds and then allows
a practitioner to have both hands available for
other treatments.
traumatic deaths: Comprehensive population-based assessment. World J Surg. 2010;34(1):158–163.
4. Acosta JA, Yang JC, Winchell RJ, et al. Lethal injuries and
time to death in a level I trauma center. J Am Coll Surg.
1998;186(5):528–533.
5. Kauvar DS, Lefering R & Wade CE. Impact of hemorrhage on
trauma outcome: an overview of epidemiology, clinical
presentations, and therapeutic considerations. J Trauma.
2006;60(6 suppl);S3– S11.
6. Malone DL, Dunne J, Tracy JK, et al. Blood transfusion, independent of shock severity, is associated with worse outcome in
trauma. J Trauma. 2003;54(5):898–905.
7. Turan A, Yang D, Bonilla A, et al. Morbidity and mortality after
massive transfusion in patients undergoing non-cardiac
surgery. Can J Anaesth. 2013;60(8):761–770.
8. Maxwell MJ, Wilson MJA. Complications of blood transfusion.
Contin Educ Anaesth Crit Care Pain. 2006;6(6):225–229.
9. Donaldson MD, Seaman MJ, Park GR. Massive blood transfusion.
Br J Anaesth. 1992;69(6):621–630.
10. Bux J. Transfusion-related acute lung injury (TRALI): A serious adverse
event of blood transfusion. Vox Sang. 2005;89(1):1–10.
11. Tien HC, Spencer F, Tremblay LN, et al. Preventable deaths from
hemorrhage at a Level I Canadian trauma center. J Trauma.
2007;62(1):142–146.
12. Dorlac WC, DeBakey ME, Holcomb JB, et al. Mortality from
isolated civilian penetrating extremity injury. J Trauma.
2005;59(1):217–222.
13. Clutterbuck H. Dr. Clutterbuck’s lectures on bloodletting: Lecture
1. The London Medical Gazette: London, 9, 1838.
14. Turner R. British Medical Journal. Br Med J. 1871;(533):283–291.
15. The Educational Broadcasting Company. (2002). Red Gold: The
epic story of blood. In PBS. Retrieved on Sept. 23, 2013 from
www.pbs.org/wnet/redgold/history/timeline3.html.
16. Vadakan VV. The asphyxiating and exsanguinating death of
president George Washington. The Permanente Journal.
2004;8(279):76–79.
17. Manring MM, Hawk A, Calhoun JH, et al. Treatment of
war wounds: A historical review. Clin Orthop Relat Res.
2009;467(8):2168–2191.
18. Richley SL. Tourniquets for the control of traumatic hemorrhage:
A review of the literature. World J Emerg Surg. 2007;2:28
19. Schreiber MA, Tieu B. Hemostasis in Operation Iraqi Freedom III.
Surgery. 2007;142(4 suppl):S61–S66.
20. Kragh JF Jr, Walters TJ, Baer DG, et al. Practical use of emergency
tourniquets to stop bleeding in major limb trauma. J Trauma.
2008;64(2 suppl):38–50.
21. Kragh JF Jr, Baer DG & Walters TJ. Extended (16-hour) tourniquet
application after combat wounds: A case report and review of
the current literature. J Orthop Trauma 2007;21(4)274–278.
22. Kragh JF Jr, Walters TJ, Baer DG, et al. Survival with emergency
tourniquet use to stop bleeding in major limb trauma. Ann
Surg. 2009;249(1):1–7.
23. Littlejohn LF, Devlin JJ, Kircher SS, et al. Comparison of Celox-A,
ChitoFlex, WoundStat, and Combat Gauze hemostatic agents
vs. standard gauze dressing in control of hemorrhage in
a swine model of penetrating trauma. Acad Emerg Med.
2011;18(4):340–350.
24. Safar P, Brown TC, Holtey WJ, et al. Ventilation and circulation with closed-chest cardiac massage in man. JAMA.
1961;176:574–576.
25. Styner R: The light of the moon: Life, death and the birth of advanced
trauma life support. Lulu Publishing: Lulu.com, 267, 2012.
26. National Health Services. (Dec. 6, 2013) Emergency care on the
battlefield. In gov.uk. Retrieved on Sept. 23, 2013, from www.
nhs.uk/Livewell/Militarymedicine/Pages/Survivingbattlefield.aspx.
27. Katzenell U, Ash N, Tapia AL, et al. Analysis of the causes
of death of casualties in field military setting. Mil Med.
2012;177(9):1065–1068.
Conclusion
Despite major advances in trauma care and
medical devices, massive hemorrhage continues to have significant morbidity and mortality
to this day. Early recognition and appropriate
action is necessary to prevent complications
and loss of life.
Adequate hemorrhage control must take
place in the prehospital environment, and EMS
systems must keep pace with changing protocols. Waiting until the emergency department
or operating room to try to achieve hemostasis is like closing the barn door after the horses
have escaped. ✚
Alison Kabaroff, CD, MD, FRCPC, is an emergency
physician with University of Alberta Hospital, medical
director for Edmonton EMS and a transport physician
for STARS.
References
1. Garrison FH: An introduction to the history of medicine. W.B.
Saunders Company, Philadelphia, 508, 1921.
2. Centers for Disease Control and Prevention. (Aug. 29, 2012)
Web-based injury statistics query and reporting system
(WISQARS). In U.S. Department of Health and Human Services, CDC, National Center for Injury Prevention and Control.
Retrieved from www.cdc.gov/injury/wisqars/index.html on
September 23, 2013.
3. Evans JA, van Wessem KJ, McDougall D, et al. Epidemiology of
DECEMBER2013
7
Direct pressure, used in conjunction with limb
elevation in extremity bleeding whenever
feasible, will control the vast majority of
external bleeding. However, controlling
bleeding sometimes requires prehospital
providers to take additional steps.
Point-of-Care
Hemorrhage
Control
PHOTO ITRAUMACARE
By Edward T. Dickinson,
MD, NREMT-P, FACEP
in that first aid course and again in my initial
EMT course later that year) really effective
interventions for bleeding?
I
t was a cold January morning in 1979 at
Colgate University when I was handed my
copy of the American Red Cross Advanced
First Aid Manual as part of my National Ski
Patrol training. Although I had never seen
severe bleeding in my life, my instructor assured
me that four simple steps would stop almost
any bleeding. They were:
1. Application of direct pressure;
2. Elevation of the bleeding site above the heart;
3. Compression of a pressure point (femoral,
brachial or temporal), and
4. Use of a tourniquet—only as a last resort (if
all the above fail).
Almost 35 years later, I’ve treated thousands
of lacerations, hundreds of gunshot and stab
wounds, and scores of amputations. Based
on that experience, I know one fact for certain: External bleeding can kill your patient
unless you stop it. What it takes to control
dangerous external bleeding is case-dependent
and needs to be accomplished with the right
sequence of interventions, coupled with common sense.
But are those four cardinal step-by-step
interventions that I was taught in 1979 (both
Fast-Forward to 2010
In 2010, the journal Circulation published evidenced-based recommendations for hemorrhage
control as part of the 2010 American Heart Association (AHA) and the American Red Cross (ARC)
Guidelines for First Aid.1 These guidelines, which
were based on current evidence, stated that only
direct pressure was a definitively proven intervention (Class I) and that a tourniquet “is indicated only if direct pressure is not effective or not
possible” (Class IIb).
Note: Remember that Class I means that the
procedure should be performed, and Class IIb
means that the benefits are equal to or greater
than the risks of the procedure and the intervention may be considered.
Finally, the use of pressure points and elevation were deemed to be Class III interventions—
meaning that the risks are greater than the
potential benefits and the procedures should
not be performed.
Many in EMS consider these guidelines to be
etched in stone and have adopted the concept of
two-step hemorrhage control (direct pressure,
DECEMBER2013
Historical perspective
& the need for a
common-sense approach
8
in the lyrics of the Lee Brice song: “Don’t try to
outsmart your common sense.”
I do agree with the AHA/ARC recommendation that the use of pressure points is likely to
be ineffective and is logistically difficult because
it’s hard (if not impossible) for a rescuer to
simultaneously provide direct pressure to a
wound and find and compress a pressure point.
The application of hand or finger pressure to
arteries against underlying bones proximal to a
bleeding site as an intervention to stop bleeding
had been taught for years in EMT textbooks,
including the original EMT text book, the 1971
American Academy of Orthopaedic Surgeons
“orange book,” Emergency Care and Transportation of the Sick and Injured.2
The classic sites of compression were at
the femoral artery as it crossed the inguinal
crease, the brachial artery against the underlying medial humerus and the temporal artery
against the skull.
The technique really boiled down to a pseudotourniquet effect and never seemed logistically
feasible. In all my years of clinical work, I’ve
used a pressure point only once effectively to
control bleeding, and that was while I had an
assistant compress a branch of the temporal
artery against the skull while I repaired a facial
laceration in the ED.
Arriving in 2013
Two new commercial interventions have
become mainstays of my management of external hemorrhage: commercial tourniquets and
hemostatic dressings.
Commercial tourniquets: Traumatic limb injuries/amputations have pushed the envelope on
tourniquet use and the development of newer
PHOTO EDWARD T. DICKINSON, MD
then tourniquet application) as the definitive
steps in hemorrhage control. Most importantly
to an EMT student, this is the position that has
been taken by the National Registry of EMTs
and is reflected in their testing process, including the practical station of “bleeding control/
shock management.”
There are several problems with the 2010
AHA/ARC guidelines and their effect on EMS.
First, the guidelines were written for the first aid provider level of care, not that of an EMT, advanced EMT
or paramedic.
For example, the guidelines state when discussing tourniquet use that they have been
“shown to control bleeding effectively on the
battlefield, and during surgery and have been
used by paramedics in a civilian setting without
complications.” The intervention is proven for
EMS providers, so shouldn’t it at least be considered a Class IIa intervention (i.e., the benefits
greatly outweigh the potential risks and the
procedure is reasonable to perform)?
My second major criticism of the AHA/ARC
first aid guidelines is their dismissal of limb elevation as a means of hemorrhage control. When
combined with direct pressure, the elevation of
a bleeding extremity is an effective intervention
to abate bleeding.
It’s true that there has never been a published,
peer-reviewed study that proves the effectiveness of limb elevation. But there has also never
been a study that shows it to be ineffective
either. This is fundamental gap in “evidencebased” protocol development. Specifically, just
because something hasn’t been studied doesn’t
mean it’s always necessarily bad—and the combination of simultaneous direct pressure limb
elevation is a perfect example.
The use of limb elevation is a common-sense
intervention based on the basic physics of gravity
and hydrostatic pressure. We know that a dependent limb has a greater venous pressure and
blood volume than a limb that is elevated. That’s
why you hang a patient’s arm down off the side
of the stretcher when trying to start an IV in a
rig so that the veins plump with greater blood
volume and pressure, making the IV start easier.
Now, I completely agree that in the midst of a
gun battle or in the setting of multiple patients
with potentially life-threatening extremity
bleeding, limb elevation (and perhaps even
direct pressure) is impractical. This is an environment for liberal tourniquet use until the
threat is neutralized or the scene stabilized.
The bottom line on the simultaneous use of
limb elevation with direct pressure can be found
Commercial tourniquet used to control arterial
bleeding from a gunshot wound to the lower leg.
DECEMBER2013
9
commercial tourniquet technology that allows
for more rapid and predictable application.
(Read a related JEMS article at www.jems.com/
article/major-incidents/tourniquet-first.)
Hemostatic dressings: Early hemostatic agents
were somewhat problematic due to the exothermic reaction they caused when they came
in contact with blood.3 The current generation
of hemostatic dressings has corrected this issue
and should be considered a part of the standard armamentarium of hemorrhage control
and used in selective cases. In my capacity as
an emergency department physician in a busy
inner-city trauma center and, at scenes as an
active EMS medical director, I use hemostatic
dressings in cases of continued bleeding when
direct pressure and elevation have not been fully
effective in bleeding control and the circumstances don’t immediately justify the risks of a
tourniquet.
A perfect example was a case in which a young
man hobbled into the ED with an isolated gunshot wound to his lower leg (see photo below).
His heavy non-arterial bleeding from multiple
fractures and a major vein injury couldn’t be
controlled despite direct pressure with elevation. Application of a hemostatic dressing
almost immediately stopped the bleeding and
made the use of a tourniquet unnecessary.
Hemostatic dressings are useful in heavily
bleeding wounds in areas where a tourniquet
can’t be used, such as the head, neck or torso. A
perfect example of this potential use of hemostatic dressing is in an elderly patient on an
anti-coagulant medication (e.g., warfarin) with
a badly bleeding scalp laceration after a fall.
Summary
Based on my clinical experience in the field and
in the ED, evaluation of the medical literature
and use of common sense, the following is my
routine approach to external hemorrhage control in 2013.
1. Apply direct pressure, first with a gloved
hand followed by a dressing and bandage
to continue necessary wound compression.
This will control the vast majority of external bleeding.
2. Elevation should still be used in conjunction with direct pressure in extremity bleeding
whenever feasible. This is especially helpful
with wounds distal to the elbow or knee.
3. Consider use of hemostatic agents in the
subset of patients whose bleeding can’t be
completely controlled with direct pressure
and elevation, when the patient does not
immediately require a tourniquet or when
the wound is in a location where you cannot use a tourniquet, such as the head,
torso or neck.
4. Rapidly apply a tourniquet(s) to any patient
with evident massive extremity bleeding
that isn’t immediately controllable with
direct pressure or at MCIs or in tactical situations to stop bleeding until triage is completed and you have the time and personnel
to remove them and use other hemorrhage
control modalities. Remember to always
visually “announce” that a tourniquet has
been applied via the traditional notation of
a “T” on a patient’s forehead. ✚
PHOTO EDWARD T. DICKINSON, MD
Edward T. Dickinson, MD, NREMT-P, FACEP, is a
professor and director of prehospital field operations
in the Department of Emergency Medicine, Hospital of
the University of Pennsylvania in Philadelphia. He is the
medical editor of JEMS.
References
1. Markenson D, Ferguson JD, Chameides L, et al. Part 17: First
aid: 2010 American Heart Association and American Red
Cross guidelines for first aid. Circulation. 2010;122(18 suppl
3):S934–S946.
2. Pollack AN (Ed.) Emergency care and transportation of the sick
and injured. American Academy of Orthopedic Surgeons.
Jones & Bartlett Learning: Burlington, Mass. 1971.
3. McManus J, Hurtado T, Pusateri A, et al. A case series describing
thermal injury from zeolite use for hemorrhage control in
combat operations. Prehosp Emerg Care. 2007;11(1):67–71.
A gunshot wound to the lower leg that required
a hemostatic agent to control the bone and
saphenous vein bleeding.
DECEMBER2013
10
From
Battlefields
to City Streets
The application of recent military trauma concepts to civilian EMS
By Peter P. Taillac, MD, FACEP
& Gerard S. Doyle, MD, MPH
field surgeon in World War I, called them “instruments of the Devil” because of the ischemic damage caused to limbs by indiscriminate use and by
the lack of a field evacuation system for injured
soldiers.1 Today, better-designed tourniquets and
focused training in prehospital tourniquet use
have proved that short tourniquet times of less
than two hours are safe and result in few cases of
ischemic limb injury.
One 2011 military study demonstrated that
early tourniquet use, prior to the onset of hemorrhagic shock, resulted in a 96% survival—compared to 4% survival when applied after shock
onset. Few (if any) permanent limb ischemic
injuries have been shown to have resulted from
military tourniquet use.2
Published tourniquet use and benefits of protocols also describe the use of a tourniquet on a
victim who has sustained multiple injuries and
has severe extremity hemorrhage, but also needs
stabilization of the ABCs.3 This became a common encounter during the care of patients after
the Reno airshow disaster; the mass shootings
in Aurora, Colo.; the Arizona shooting involving Congresswoman Gabby Giffords; and the
Boston Marathon bombing.
In these situations, tourniquets rapidly placed
by the provider immediately, saved lives. The
provider can then turn their attention to airway
management, interventions to improve breathing like needle thoracostomy, as well as IV/IO
placement and fluid administration as needed
to restore circulating intravascular volume.
After the patient has been stabilized and the
“safety net” established, the medic can then turn
their attention to re-evaluating and possibly
T
he decade of war in Iraq and Afghanistan has been unique from prior American conflicts because of a new partnership between military medicine and civilian
trauma experts, combined with an innovative
data collection system, the Joint Theater Trauma
Registry (JTTR), which has tracked soldiers’
injuries throughout the war. This has allowed
researchers to monitor the usefulness and safety
of trauma treatments used by the military.
Several “combat tested” therapies have begun
to be adapted by civilian trauma centers and
EMS providers back home, most often related
to treating victims of multiple traumas. Injuries
caused by IEDs span the spectrum of trauma.
They produce huge concussive forces, which
cause blast injuries, particularly to the air-filled
organs (i.e., ears, lungs and bowels) as well
as to the brain, which is a common cause of
traumatic brain injury (TBI) in soldiers. Often
packed with shrapnel, IEDs also produce multiple penetrating injuries, similar to multiple
simultaneous gunshot wounds.
The lessons learned from dealing with these
horrendous combat wounds have begun to
be translated to our daily care of our trauma
patients in American EMS systems.
Tourniquets
The tourniquet is now, once again, an important tool in the toolbox of EMS providers.
For decades, tourniquets were considered dangerous because common thought was that they
cause tissue damage. Major Blackwood, a British
DECEMBER2013
11
Hypotensive Resuscitation
PHOTO RICK ROACH
The concept of hypotensive resuscitation, which
is also known as “permissive hypotension,” has
actually been around since first proposed by
Walter B. Cannon during World War I. Cannon
recognized the importance of having a surgeon
“ready to check any bleeding” that resulted
from the improved blood pressure after fluid
infusion.4 In World War II, Henry K. Beecher,
MD, stated that a systolic blood pressure of
85 was adequate for those awaiting surgery for
long periods.5
However, during the Vietnam War, the concept of using large volumes of crystalloid fluid
and restoring the injured patient’s blood volume to “normal” became an accepted practice.
It has been taught to several generations of
EMS providers, surgeons and ED physicians.
More recently, other concepts have gained
acceptance in military and civilian trauma communities. These include the concept of allowing the trauma patient to be moderately hypotensive and only replacing enough volume to
treat shock. This is based on the theory that the
body’s natural response after trauma is to minimize hemorrhage by forming a fragile clot on
the bleeding vessel. Excessive IV fluid administration can actually result in increased bleeding
from the injured vessel by the following proposed mechanisms:
• A rise in blood pressure, which results in
increased pressure on the delicate clot, causing it to rupture;
•
An increase in the intravascular volume,
which stretches the vessel and increases tension on the clot, causing it to fail; and
• The body’s ability to clot, which is the result
of clotting factors and platelets circulating
in the blood. When excessive amounts of
crystalloid are administered, these critical
factors are diluted, interfering with clot formation and strengthening.
Evidence now suggests that allowing the
patient to remain moderately hypotensive (systolic BP in the 80–90 range or the maintenance
of a radial pulse) maximizes the body’s ability to
slow bleeding using these intrinsic mechanisms.
So, “Don’t pop the clot” is the current recommendation for penetrating trauma of the torso.
A common protocol for permissive hypotension in trauma is the following: In a patient
with penetrating trauma who is maintaining a systolic blood pressure at or above the
80–90 range or who has a radial pulse, IV access
should be obtained with a saline lock but no
IV fluid administered. If the systolic BP falls
A military trauma medicine concept that is gaining
acceptance in civilian EMS: allowing the trauma
patient to be moderately hypotensive and only
replacing enough volume to treat shock.
removing the tourniquet and replacing it with
a pressure dressing.
Bottom line: The use of tourniquets to quickly
stop severe bleeding should be an important
part of the prehospital care of patients.
Hemostatic Adjuncts
Hemostatic adjuncts have occupied a “niche
market” for both military and civilian EMS providers. These products, designed to be placed
into a bleeding wound to assist the body’s ability to form a clot, are effective.
Such agents as kaolin, chitin and zeolite are
used in either granular form or incorporated
into gauze. They work by giving the bleeding vessel a substrate on which to form a clot.
In addition, some products may augment the
body’s intrinsic clotting mechanisms.
Hemostatic adjuncts have been used by military medics throughout the Iraq and Afghanistan wars. Given the effectiveness of a simple
pressure dressing and the widespread availability of tourniquets, these specialized products
have not been required often. However, these
agents can be lifesaving, particularly in difficultto-manage wounds, such as those of the groin or
axilla. They provide effective hemorrhage control
for wounds that aren’t amenable to other methods of hemorrhage control and which might
otherwise be fatal. Current products, especially
those impregnated into gauze for packing into
the wound, have proven effective and safe in the
battlefield and civilian environments.
DECEMBER2013
12
Tourniquets have returned to the
prehospital provider arsenal. By
rapidly placing a tourniquet to
stop life-threatening hemorrhage,
the provider can then turn
their attention to other needed
interventions.
PHOTOS COURTESY NORTH AMERICAN RESCUE
below 80–90, or if the patient loses the radial
pulse, then calibrated fluid boluses of crystalloid, 500–1,000 ccs at a time, should be administered, then the patient reassessed.
When the systolic BP or radial pulse is
restored, no further fluid is necessary. The goal
is not to restore BP to “normal,” but to maintain perfusion of vital organs and avoid shock
while simultaneously allowing the body to
avoid increasing hemorrhage.
Several cautions must be stated regarding the
hypotensive resuscitation strategy for trauma.
First is that this has only been studied with
confidence in adults. Although studies of permissive hypotension in children are ongoing,
currently the Pediatric Advanced Life Support (PALS) protocol should be followed. This
includes giving 20 cc/kg boluses of crystalloid
to maintain or restore a normal BP for age.
Children, particularly those younger than
8 years old, respond differently than adults to
hemorrhage. Children tend to increase pulse
rate and systemic vascular resistance to maintain a normal BP for as long as possible. When
hypotension finally occurs because of a failure of these compensatory mechanisms, the
shock state can be difficult or impossible to
reverse. Therefore, hypotension/shock should
be avoided in children by restoring intravascular volume with crystalloid until BP is normal
or near normal.
Another precaution regarding this permissive
hypotension strategy is that it shouldn’t be used
in patients with a head injury. In the face of a
cerebral injury, the swelling and increased pressure in the skull makes it difficult for the brain’s
auto-regulatory mechanisms to maintain critical brain perfusion. Keeping the blood pressure
at normal levels promotes cerebral perfusion in
the face of this increased intracranial pressure,
minimizing secondary injury of the brain.
The benefit of permissive hypotension in blunt
trauma patients is still under study. Researchers
recently reported an analysis of blunt trauma
patients that demonstrated a more favorable
outcome for blunt trauma patients who aren’t
in shock and who receive less IV fluids.6 But
more information is needed to confirm the
findings.
Tranexamic Acid
Tranexamic acid (TXA) is an antifibrinolytic
medication that inhibits the body’s natural
breakdown of clots after injury. In a large international study (CRASH-2), followed by a study
of British and American soldiers (MATTERS),
this medication decreased mortality in patients
with traumatic hemorrhage.7,8
TXA has been used safely by surgeons for
orthopedic procedures and is FDA approved for
use in heavy menstrual bleeding (in Great Britain, it’s actually available over the counter for
this indication). It’s cheap, easy to administer
and has few side effects.
Importantly, the CRASH-2 data demonstrated that TXA had the largest mortality
benefit when used as soon as possible after the
injury—ideally less than one hour. However,
when use was delayed more than three hours,
the benefit to the patient disappeared and an
increased mortality was observed.7
Because of this one-hour window, this medication may be best administered by prehospital
providers. In fact, EMS providers in Europe and
Asia have been using TXA for years, and several
North American EMS agencies, such as those
in Alberta, Canada, Oklahoma City and New
York City, have begun using TXA for severely
injured trauma patients. (Read a related JEMS
article at www.jems.com/article/patient-care/
role-tranexamic-acid-ems-preoperative-tr.)
Freeze Dried Plasma
Underlying the evidence of benefit of the hypotensive resuscitation strategy is evidence suggesting that in all types of trauma, excessive
crystalloid IV fluid is harmful and that resuscitation with blood products is superior. This
makes clear intuitive sense. In traumatic hemorrhage, the body has lost blood, not crystalloid.
So blood would be the ideal resuscitation fluid,
replacing exactly what the body has lost.
DECEMBER2013
13
Other Hemorrhage-Control Devices
Although crystalloid can replace intravascular volume (which may be lifesaving), blood
replaces all of the important components that
the body has lost, including oxygen-carrying
red blood cells, as well as platelets and clotting
factors to stop hemorrhage. So clearly, the ability to replace what the body has lost would be
naturally superior to simply replacing volume
with crystalloid, diluting all of the body’s blood
components and rendering them less effective.
The use of blood products in trauma, in the
proportions that they are lost (the proper ratio of
red blood cells, clotting factors and platelets) has
become the goal of trauma care in the hospital.
This concept is reflected in the “massive transfusion protocols” developed by civilian trauma centers and based on battlefield success with using
whole blood transfusions for injured patients.
Although whole blood is available on the
battlefield via immediate transfusions from
other soldiers to the injured patient, it isn’t easily available in civilian facilities. There, donated
blood is broken down into three components:
red blood cells, platelets and plasma. Therefore,
these massive transfusion protocols call for the
following actions:
1. Minimizing crystalloid administration to
trauma patients, and
2. Replacing blood products in a specified
ratio of red blood cells, platelets and fresh
frozen plasma to come close to replacing
“whole blood.”
With the exception of some hospital-based air
ambulance agencies, the capability to use blood
products in the field is still a futuristic concept.
However, work continues to develop “artificial
blood,” which will replace some of the capabilities of blood in trauma. Already, French and German military medical providers in Afghanistan
are using a novel dried plasma product for resuscitation of prehospital and ED trauma patients.
This human plasma is “freeze dried” or “spray
dried” into a powder containing the clotting factors lost by the body in hemorrhage. This can be
reconstituted with saline by EMS providers and
administered in the place of crystalloid, providing the patient with volume resuscitation as well
as replenishment of critical clotting factors.
In a 2011 Journal of Trauma article, researchers
demonstrated this lyophilized plasma to be as
effective as the standard “fresh frozen” plasma
commonly used in the hospital.9 After further
study and clearance by the Food and Drug
Administration (FDA), this product could well
be stocked by civilian EMS agencies to be used
for severe trauma.
Junctional compression “tourniquets” (such as
the Combat Ready Clamp (“CRoC”) discussed
in this supplement (see p. 23) are currently being
field tested by the military and showing promise for the control of hemorrhage in the groin,
an area where bleeding can be severe and very
difficult to control. A new hemorrhage control
device, the iTClamp, also holds promise for use
both in civilian EMS and for the military.
Conclusion
The decade of war that the U.S. and other military forces have experienced in Iraq and Afghanistan has resulted in revolutionary improvements
in military trauma care. These improvements
can be attributed to the use of a military trauma
registry and the cooperation between civilian and
military trauma researchers. ✚
Peter P. Taillac, MD, FACEP, is a clinical professor of
surgery in the Division of Emergency Medicine at the
University of Utah School of Medicine. He is also the
EMS medical director for the Utah Bureau of EMS and
Preparedness, Utah Department of Health, and for the
West Valley City (Utah) Fire Department.
Gerald S. Doyle, MD, MPH, is an assistant clinical
professor of surgery in the Division of Emergency Medicine at the University of Utah School of Medicine. He is
medical team manager with Utah Task Force 1/FEMA
Urban Search and Rescue.
References
1. Blackwood M. Treatment of wounds from fire trench to field
ambulance 1916. J R Army Med Corp. 2001.147(2):230–235.
2. Kragh JF Jr, Littrel ML, Jones JA, et al. Battle casualty survival
with tourniquet use to stop limb bleeding. J Emerg Med.
2011;41(6):590–597.
3. Taillac PP, Doyle GS. Tourniquet first! Safe and rational protocols
for prehospital tourniquet use. JEMS. 2008;33(10):24–32.
4. Cannon WB, Fraser J & Cowell EM. The preventive treatment of
wound shock. JAMA. 1918;70(9):618–621.
5. Beecher HK. Preparation of battle casualties for surgery. Ann
Surg. 1945;21(6):769–792.
6. Brown JB, Cohen MJ, Minei JP, et al. Goal-directed resuscitation
in the prehospital setting: A propensity-adjusted analysis. J
Trauma Acute Care Surg. 2013;74(5):1207–1212.
7. CRASH-2 Trial Collaborators, Shakur H, Roberts I, et al. Effects
of tranexamic acid on death, vascular occlusive events, and
blood transfusion in trauma patients with significant haemorrhage (CRASH-2): A randomized, placebo-controlled trial.
Lancet. 2010;376(3):23–32.
8. Morrison JJ, Dubose JJ, Rasmussen TE, et al. Military application
of tranexamic acid in trauma emergency resuscitation (MATTERs) study. Arch Surg. 2012;147(2):113–119.
9. Martinaude C, Ausset S, Deshayes AV, et al. Use of freeze-dried
plasma in a French intensive care unit in Afghanistan. J
Trauma. 2011;71(6):1761–1765.
DECEMBER2013
14
A New Tool
in the Box
First U.S. field use of the iTClamp
proves its value in treating hypoxia
from a hemorrhagic standpoint
By Jason L Clark CMTE, NRP, FP-C, CCEMT-P
I
n classrooms all across the nation, students
are taught that hypoxia is inadequate oxygen supply for the body. Although that’s
true, we sometimes fail to explain to students
the multiple types of hypoxia that our patients
could be encountering. In fact, in most commonly utilized textbooks for EMT and paramedic programs, the four types of hypoxia are
not addressed.
Understanding the etiology of the four types
of hypoxia—hypoxic, hypemic, stagnant and
histotoxic—is crucial in providing care that will
result in the most desirable outcome for the
patient.
Patients experiencing significant hemorrhage are an excellent example. Despite a provider’s best effort to gain an airway and provide
high-flow oxygen, these patients will experience
hypemic hypoxia due to a lack of hemoglobin,
which serves as the transport mechanism for
oxygen molecules to reach the body’s tissues. As
a result, the human body experiences anaerobic
metabolism, resulting in the production of lactic acid and leading to the onset of shock. Controlling the patient’s bleeding, then, becomes
the priority in preventing hypoxia in hemorrhage patients.
Military and tactical providers have long recognized the importance of early and aggressive
hemorrhage control and treatment to prevent
their patients from going into shock. They are
(Above) Providers with Hospital Wing in Memphis,
Tenn., transport a patient to a Level 1 Trauma
Center after using the iTClamp to stop the bleeding
from a chainsaw injury. PHOTOS COURTESY HOSPITAL WING
well aware that once a patient goes into shock,
it is difficult to reverse their downward spiral.
Therefore, unlike their civilian counterparts,
military and tactical providers are trained to
address massive hemorrhage control prior to
airway and breathing. The frequency of masshemorrhage injuries is more common for our
active-duty military providers; however, the
physiology is no different than the injuries that
civilian prehospital providers encounter.
What about Tourniquets?
Tourniquet application is fast, efficient and
controls bleeding by applying circumferential
pressure to an extremity. The pressure exerted
compresses vessels in the extremity, resulting in
blood flow being stopped to the tissues distal of
the application site.
However, the tourniquet works because it
stops blood flow. As a result, the tissues distal of
the applied site experience stagnant hypoxia,
which results when blood is no longer being circulated adequately or starts to pool in a certain
area. Stagnant hypoxia can be a result of cardiac
failure or a blockage in the circulatory system.
DECEMBER2013
15
wound can be approximated and if the wound
was sustained in a compression-able area.
Wound closure has been the hemorrhage control practice for many years in the hospital setting
for wounds that have edges that can be approximated. In the prehospital setting, however, field
suturing has never been a common practice. In
the past, the timeframe in which it would take
to close most wounds appropriately wasn’t conducive to the prehospital environment and the
sometimes tedious process of closing wounds
has been considered an unacceptable risk of needle stick injury for providers, particularly those
working in moving ambulances.
But with the introduction of the iTClamp50,
EMS providers can now perform a field wound
closure technique that works very similar to
suturing in the field but in a faster and safer manner. The iTClamp50 incorporates small needles
(four on each side) on a clamp device that allows
clinicians to quickly provide temporary closure
of a wound by approximating wound edges and
creating a “watertight” seal. The bleeding then
creates a hematoma under pressure beneath the
skin as it fills the wound cavity with blood and
creates a clot to control blood loss. (For more on
how the iTClamp works, see p. 18.)
The iTClamp50, designed to be used in areas
that are compression-able, is an ideal device for
the control of arterial, venous or capillary bleeding in wounds to the extremities, axilla and
inguinal areas.
When used appropriately, the iTClamp50
offers a benefit over tourniquets because it
allows distal blood flow to the intact vessels
of the injured extremity, which in turn greatly
reduces or eliminates the possibility for stagnant hypoxia.
Providers used two iTClamps due to the length
of the wound. Within minutes following their
application, the bleeding was under control.
To view a short video related to the first U.S. use of
the iTClamp, scan the QR
code below or visit www.
jems.com/video/news/
tennessee-medics-usingit-clamp.
Following tourniquet removal, hospital personnel often have to treat the patient due to
an overall change in their systemic circulatory
system following the release of stagnant blood
with increased levels of lactic acid, potassium
and other chemical imbalances.
Ironically, tourniquets can also play a positive
role as an adjunct in the prehospital setting to
prevent complications from stagnant hypoxia
in victims with crush injuries. As the object
crushing the limb is removed, the tourniquet
can be used to prevent the stagnant blood from
being returned to central circulation.
The iTClamp in Use
Hospital Wing, a non-profit air medical transport based in Memphis, Tenn., that provides
inter-hospital transfers as well as emergency
scene calls, was the first program in the United
States to adopt the iTClamp50 as part of its
hemorrhage-control protocol.
Prior to the device receiving FDA clearance,
Hospital Wing had the opportunity to work with
staff from Innovative Trauma Care in testing the
application of the device at the Medical Education Research Institute (MERI) in Memphis. Following FDA clearance, Hospital Wing acquired
the devices and provided in-service training for
the flight crewmembers, who provided positive
comments on the easy operation of the device.
Following in-service training, the devices were
A Better Way?
Although tourniquets are certainly useful, lifesaving tools to control blood loss, the optimal
tool is one that effectively controls the hemorrhage but also allows for distal blood flow to
the uninjured parts of the extremity. Clinicians
should perform a rapid assessment of each
injury to determine the most effective method
to control bleeding. The assessment should
include the type of wound, length, approximate
depth and type of vessels involved. The provider
should also determine whether the edges of the
DECEMBER2013
16
placed on the aircraft for patient use.
Hours after placing the devices in service,
Hospital Wing received a flight request from
an outlying hospital to transport a patient who
had been injured in a chainsaw accident. When
Hospital Wing flight crewmembers arrived, they
found a 64-year-old male with serious bleeding
to his left upper arm. The crew removed the
blood-soaked dressings that were applied by
hospital staff in efforts to assess the wound.
Upon assessment it was noted the patient
had an approximate 7-inch-long, 1-inch-deep
wound that was bleeding profusely.
Flight Paramedic Jennifer Miller and Flight
Nurse Jan Weatherred made the decision to
deploy the iTClamp50. Due to the size of the
laceration, two iTClamps were utilized. Within
two minutes following their application, the
bleeding was under control (see photo, p. 16).
The patient was then flown to the regional
Level 1 Trauma Center and, approximately 35
minutes after application, the iTClamps were
removed with the trauma team at the patient’s
bedside.
Following removal of the iTClamps, the
bleeding was confirmed to have subsided and
the patient was hemodynamically stable and
able to be treated in the critical care assessment
portion of the trauma center instead of requiring a shock trauma room. Physicians were able
to suture the wound (see photo, above right)
and provide antibiotic therapy. The patient was
discharged approximately eight hours following arrival at the trauma center.
Quick and effective control of the patient’s
severe hemorrhage allowed the Hospital Wing
flight crew to preserve precious red blood cells
and resulted in the patient not requiring a blood
transfusion or experiencing a hypoxic event.
The patient was discharged with normal
wound care instructions. Two days after discharge, a follow-up with the patient was conducted, during which the patient reported a
minimal pain level during application of the
iTClamp and described feeling only a slight
pressure sensation following application.
Following removal of the iTClamps, the bleeding
was confirmed to have subsided. Physicians were
able to suture the wound and provide antibiotic
therapy. In a follow-up two days later, the patient
reported a minimal pain level and described only a
slight pressure sensation following application of
the iTClamp.
it is also important to understand and utilize
the most appropriate method or methods to
control bleeding, such as packing a wound with
a hemostatic dressing prior to applying the
iTClamp if the wound is large and open.
Tourniquets have been adopted as the standard of care for mass hemorrhage control due
to evidence-based medicine obtained from our
military healthcare providers. Now, we have a
tool that may be even more effective than tourniquets for certain situations.
As civilian EMS professionals, we should follow the footsteps of our military and tactical
providers and educate our clinicians to rapidly
identify and effectively treat uncontrolled, lifethreatening bleeding prior to becoming deeply
engaged in providing airway and breathing care.
Without red blood cells to transport oxygen
molecules to the tissues, all is lost. ✚
Jason Clark, CMTE, NRP, FP-C, CCEMT-P, is the
director of business development and director of education for Hospital Wing Air Ambulance Service in Memphis. Beginning his career as a volunteer firefighter in
1999, Clark became part of the air medical industry in
2005. He has taught multiple classes throughout the
mid-south and holds multiple instructor certifications;
instructing airway management is one of his specialties.
Clark serves his community as a firefighter, paramedic,
police officer and tactical medic on the department’s
SWAT. Contact him at [email protected].
Conclusion
As more equipment and pharmaceutical agents
become readily available to prehospital professionals, we must first remember to sharpen our
critical thinking and patient-assessment skills,
understand the four types of hypoxia situations
and how to treat them and save as many red
blood cells as possible.
With multiple tools to control hemorrhage,
DECEMBER2013
17
PHOTO A.J. HEIGHTMAN; INSET iTRAUMACARE
The iTClamp features two pressure bars with
four 21-gauge 4-mm-long needles. During
application, needles puncture the skin about
4.5 mm on average. As the iTClamp is closed,
the edge of the skin is everted between the
pressure bars.
How the
iTClamp
Works
Life-saving power in a small, easy-to-use hemorrhage-control device
The iTClamp is packed sterile and features
two pressure bars connected by a hinge. Within
this hinge is a one-way clutch, which allows
the device to be closed and maintain pressure,
but which prevents it from opening unless the
release buttons are pressed. Along each pressure bar are four 21-gauge 4-mm-long needles,
which serve to evert the skin edges during application and hold the device in place once closed.
During application, needles puncture the
skin about 4.5 mm on average. As the iTClamp
is closed, the edge of the skin is everted between
E
PHOTOS iTRAUMACARE
ssentially all mechanical hemorrhagecontrol techniques work by applying
pressure, either directly or indirectly to
the bleeding vessels (or proximal to the bleeding
vessels in the case of tourniquets). The iTClamp
also relies on pressure to control hemorrhage,
but does so in a novel manner. It essentially
converts an open bleeding wound into a closed
wound, which then allows a stable clot to form
in the contained space, ultimately tamponading
the bleeding vessel.
Once the iTClamp seals the wound closed, the blood will fill the wound
pocket, forming a hematoma under pressure. As the pressure builds,
the wound pocket will stretch slightly until the pressure in the wound
equalizes with the pressure in the bleeding source. At this point, flow
into the wound pocket will stop and hemorrhage will be controlled.
DECEMBER2013
18
PHOTOS A.J. HEIGHTMAN
the pressure bars. When fully closed, the pressure bars seal the wound along their surface
horizontally and vertically, creating a completely air/fluid tight seal.
Once the iTClamp seals the wound closed,
the blood will fill the wound pocket, forming
a hematoma under pressure. As the pressure
builds, the wound pocket will stretch slightly
until the pressure in the wound equalizes with
the pressure in the bleeding source. At this
point, flow into the wound pocket will stop and
hemorrhage will be controlled. Wounds that
also have a tissue loss can be packed with gauze
and/or a hemostatic agent before application of
the iTClamp, ultimately lessening the amount
of blood loss before a tamponading clot forms.
The CT angiography on p. 18 illustrates the
formation of the hematoma within the wound
pocket. In this case, since the vessel was only
nicked (an arteriotomy) rather than transected,
distal flow through the vessel was maintained.
The clamp can effectively stop ongoing blood
loss as long as the wound is amenable to a contained clot formation. Through-and-through
wounds can be managed by application to both
external wounds. The iTClamp is less likely
to be effective in situations where the wound
enters a large body cavity, as external containment will not stop internal hemorrhage.
The iTClamp can be applied within seconds,
and can control hemorrhage within minutes.
Utilized as a rapid, simple intervention, it
should be considered as a life-sustaining intervention in situations such as those involving
SALT triage. Although currently approved for
extremity use only, an indication for the scalp
should soon be approved, providing an effective
means of quickly controlling significant bleeding, even in children.
A question that’s often raised during discussions of the iTClamp is how much pain results
from application. Since the needles are small
and penetrate simultaneously, and because
they penetrate only superficially, pain has
actually been reported as being very tolerable.
Both volunteers with no injury and patients in
the clinical setting typically report application
pain around 2–3 on a 0–10 pain scale. Once
in place, pain is minimal, typically described
as an awareness that the device is present but
not painful. A sensation of pressure at the site
is the most common reported sensation from
healthy volunteers.
The iTClamp has the advantage of being
compact, simple and quickly applied; in many
cases, it can replace a large, bulky dressing that
Because the iTClamp’s needles are small and
penetrate simultaneously, and because they
penetrate only superficially, pain is reported to
be very tolerable.
can actually wick blood and its clotting components from the wound, thereby actually worsening bleeding. The device can also replace the
need for a provider to maintain pressure on a
bleeding site, freeing them to provide other
life-saving care. Pressures formed within the
now-sealed wound cavity will equalize with the
bleeding vessel, automatically resulting in just
enough pressure to control the hemorrhage.
The iTClamp can be removed and replaced
in the field to ensure adequate wound sealing,
but can also be left in place for several hours
until definitive surgical care can be rendered.
Animal studies have shown no short-term
injury or damage to the wound where the
clamp has been placed.
The iTClamp provides a novel way to quickly
control life-threatening hemorrhage in a compact and easy-to-use device. Utilizing the body’s
own natural processes, it is safe and effective.
Training is intuitive and straightforward. ✚
Joe Holley, MD, FACEP, is medical director for Memphis Fire, Shelby (Tenn.) County Fire and multiple
municipalities in the area. He is also medical director
for FEMA’s Tennessee Task Force One Urban Search and
Rescue Team, and has been deployed over 20 times
to such events as the Pentagon during 9/11 and Hurricane Katrina. Holley is also the senior medical team
manager for the Incident Support team for FEMA and
a long-standing member of the Eagles Coalition, an
organization composed of the medical directors of the
top-performing EMS systems in the country.
DECEMBER2013
19
PHOTO GLEN ELLMAN
Training &
Speed Are
Crucial
Options, issues & training to prevent death from
massive blood loss
E
(Above) EMS providers should frequently train on
hemorrhage control and the types of situations
in which it will be required, such as this gunshot
scenario. Only repetitive practice will ensure proper
and rapid use of hemorrhage-control devices in the
face of severe hemorrhage.
xsanguination accounted for more than
half of the preventable deaths in Vietnam;
almost 50% of combat fatalities before
evacuation from Iraq were attributed to uncontrolled hemorrhage.1,2 Uncontrolled hemorrhage
also results in the death of a large number of
civilian trauma fatalities each year.
Recent military conflicts have led to many new
and novel approaches to control hemorrhage.
Many of these new devices and substances will
soon be added to your kits and ambulances. This
article, therefore, will discuss the variety of new
products available to control hemorrhage, as well
as how to effectively train on their use in the civilian prehospital setting.
ting. And they often hide ongoing bleeding.
4. Dressings must cover the entire wound, and
a bandage is used to hold the dressing in
place. The bandage can provide additional
pressure if it is applied tightly enough.
5. Leaning into the delivery of direct pressure
may be required to stem aggressive arterial
flow. Impaled foreign bodies should not be
removed because profuse bleeding can occur.
6. Elevation of an affected extremity will
decrease most bleeding and should be used
as an adjunct with direct pressure.3 However,
even after splinting, elevation of an extremity
can make transportation problematic.4
7. Compression of the artery proximal to the
wound can also decrease bleeding, but pressure points are may be difficult to access and
maintain, especially during patient movement and treatment. Note: The use of pressure points and elevation were deemed by the
AHA to be Class III interventions—meaning
that procedures should not be performed.
8. Splinting the extremity can decrease bleeding, especially if the limb is restored to an
anatomical position, and may improve hematoma formation, especially with fractures.
9. Blind clamping is more likely to cause additional injury than to control bleeding and
Pressure
As discussed in this supplement, direct pressure
is an easy and effective initial way to control hemorrhage and should be the first method for hemorrhage control. We know that if direct pressure
fails to control hemorrhage, it signifies deep, massive or arterial injury, which usually needs surgery
or a more effective bleeding control measure.
When training on direct pressure, use methods
that simulate difficult-to-control hemorrhage
and stress to your students and crews that:
1. Direct pressure should be held for at least 5
minutes before checking to see if it’s effective.
2. Application of direct pressure requires two
hands pushing against the injured patient
while they’re lying on a flat, hard surface.
3. A bandage does not equal direct pressure. In
fact, they may “wick” or absorb blood from
the wound without actually aiding in clotDECEMBER2013
20
PHOTO A.J. HEIGHTMAN
should therefore be avoided.
10. Neurovascular compromise distal to the
wound site must be continuously assessed.
11. The iTClamp and other tools that maintain
direct pressure and hasten clotting can be
extremely useful during triage, mass-casualty incidents or when wounds are deep or
beyond the normal “reach” of the rescuer.
12. Significant blood losses are associated with
coagulopathy (impaired blood coagulation). Coagulopathy combined with hypothermia and acidosis forms the lethal triad
of death. The control of hypothermia and
acidosis are vital to prevent morbidity and
mortality for severe hemorrhage.
13. All patients should be resuscitated to prevent shock.
14. Patients who are hemorrhaging should
be carefully protected from heat loss and
hypothermia. Although these practices are
not directly related to the control of lifethreatening hemorrhage, they’re vitally
important to the ultimate recovery of the
patient and should be part of any efforts to
control severe bleeding.
The education (and re-education) of your personnel about hemorrhage control must include
proper description of each device, realistic simulation of severe hemorrhage and repetitive practice to ensure their proper and rapid use in the
face of severe hemorrhage. It is equally important
that your crew understand how each of these
devices, substances or processes work, when they
should be used and any obstacle to their use or
complications that may be encountered.
Hemostatic agents such as QuickClot and Celox can
aid in hemorrhage control, but providers must train
with them and understand their limitations.
hemostatic agent, is also placed directly into
the wound. The composition of the product is
proprietary but is free of botanical or biological products, which may reduce the chance of
allergy or disease transmission. Animal studies have shown some success, and there are
multiple case reports in the military arena.6
QC has the potential to cause burns due to an
exothermic reaction, but it has been modified
to reduce this effect. The U.S. Marine Corps
deploys QC for life-threatening hemorrhage
not responding to standard therapy.
•
Dry fibrin sealant dressing: This FDA
approved dressing is composed of two layers of clotting proteins sandwiching a layer
of calcium chloride and human thrombin,
freeze-dried to a dexon mesh backing. The
fibrinogen and thrombin react to form an
adherent fibrin layer, staunching blood flow.
Combat theater use has shown these dressings to be fragile, and they are expensive.7,8
Civilian use is not currently widespread due
to cost and complexity of use.
•M
odified Rapid Deployment Hemostat
Dressing: This dressing is currently FDA
approved but not widely used in the civilian
sector. It’s composed of an algae-derived protein. Its mechanism of action is red cell aggregation, activation of platelets and the clotting
cascade, as well as local vasoconstriction. It
has shown some promise in animal models,
and some success in military and civilian use.9
•H
emCon: HemCon Chitosan Bandage is a
biodegradable complex carbohydrate product
of Chitin, a naturally occurring glucosamine.
It works via its mucoadhesive properties, but
may also enhance platelet function. Animal
studies have shown promising results, and
there are multiple case reports from the U.S.
Army’s combat operations.10,11
•C
elox: Celox is made with chitosan, a natural
polysaccharide, and is broken down into glucosamine. It is derived from shellfish, but does
Hemostatic Agents
Several hemostatic agents are currently on the
market, and although they have seen some success in the combat arena, much of the scientific
data regarding the efficacy of these agents is animal-based, or in the form of case reports from the
battlefield. Educators must teach their personnel
the applicability and limitation of these agents.
•T
rauma Dex: Trauma Dex is a sterile, plantbased starch agent that’s poured directly into
a bleeding wound. The hemostatic effect of
the product is achieved by absorbing water
from the blood and plasma and facilitating
clot formation. The powder is bio-inert and
doesn’t generate exogenous heat. It performs
as advertised in small wounds in animal models, but it wasn’t shown to have significant
benefit over standard gauze dressings when
used in a lethal animal groin wound model.5
•Q
uickClot: QuickClot (QC), a granular
DECEMBER2013
21
PHOTOS A.J. HEIGHTMAN
A recent product that offers realism to training is LUNA’s TrueClot Blood Simulant. This non-toxic, non-stain,
realistic “blood” actually clots when used in conjunction with simulated wound clot dressings and the iTClamp.
not appear to cause skin reactions in those
hypersensitive to fish or shrimp. It works
via a direct interaction with the blood, not
through the clotting cascade, and has shown
effectiveness in patients on anti-platelet and
anti-coagulation therapy. It comes in a granular form as well as impregnated gauze.12,13
All hemostatic agents require proper wound
packing and pressure.14
that dissolves blood clots. TXA is now used by
both the U.S. and Britain to treat severe wartime
injury and hemorrhage. Current guidelines recommend that patients receive a 1 g loading dose
of TXA in the first three hours after injury, followed by IV infusion of another gram over eight
hours. The earlier the initial dose is administered, the more likely it is to prevent fibrinolysis.
For more information on TXA, see p. 13.
Tourniquets
Combat Ready Clamp
Several tourniquets are currently commercially
available, with the C.A.T. most frequently used
by the military.15 Lessons learned include:
• The need to apply the tourniquet before the
onset of shock and use by all personnel,
including self-use—a basic-level skill.
• If a single tourniquet doesn’t eliminate distal
pulses, then a second should be applied just
proximal to the first. This effectively increases
the tourniquet width, controls bleeding more
effectively and reduces complications.
• The Velcro band should be as tight as possible
before the application of the windlass. Three
180-degree turns of the windlass should be
sufficient to occlude arterial flow if the Velcro
strap has been effectively tightened.
•
Military researchers have carefully studied
the routing of the friction band through the
buckle of the C.A.T. The band can be routed
through one or both slits of the buckle. Recommended routing depends on the application by one or two hands and the placement
on upper or lower extremity. The friction
band should always be placed through both
slits in the buckle when applied with two
hands or when used on the lower extremity.
This prevents the tourniquet from slipping
when more torque is applied, as is usually the
case on the lower extremity. Use of a single slit
is only acceptable in upper extremity use.
The Combat Ready Clamp (CRoC) is an FDAapproved device for control of hemorrhage in
junctional areas, where tourniquet application is
impossible, and in the axillary. Sites such as the
inguinal, axillary, and pelvic areas are difficult
areas to provide hemorrhage control. This device
applies direct pressure over packed inguinal
injury sites and applies pressure midway between
anterior superior iliac spine and pubic tubercle
(occluding the external iliac artery).
The CRoC is placed in the inguinal area to stop
circulation to the pelvic and femoral region when
a casualty is in danger of bleeding to death from
wounds that are poorly accessible to treatment
by traditional bandages or tourniquets.16
Transexamic Acid
The FDA-approved iTClamp Hemorrhage Control System, developed by Canadian trauma surgeon Dennis Filips, MD, who served in Afghani-
SAM Junctional Tourniquet
The SAM Junctional Tourniquet for hemorrhage
control is designed to control bleeding where
tourniquets would not be effective, such as with
IED/blast injuries or high-level amputations. It is
compact, easy to use (only four steps), and quick
to apply (typically under 25 seconds).
The target compression device (TCD) is placed
at or near the injury site and pumped up until the
bleeding stops. Two TCDs can be used to occlude
blood flow bilaterally if needed. The patented
buckle provides the clinically correct force every
time, taking the guesswork out of tightening.
iTClamp
Transexamic acid (TXA) is an anti-fibrinolytic
that blocks the action of plasminogen, an enzyme
DECEMBER2013
22
Joe Holley, MD, FACEP, is medical director for Memphis Fire, Shelby (Tenn.) County Fire and multiple municipalities in the area. He is also the EMS medical director
for the state of Tennessee. Holley is the medical director for FEMA’s Tennessee Task Force One Urban Search
and Rescue Team, and has been deployed more than 20
times to such events as the Pentagon during 9/11 and
Hurricane Katrina.
stan, is a small, lightweight, single-use, disposable
plastic device that features eight 21-gauge surgical
needles and two pressure bars that quickly creates
a fluid-tight seal across the wound. It is designed
to be used by care providers to control bleeding
in seconds or even to be self-applied by wounded
personnel (e.g., police officers or combat soldiers).
The device is approved in the U.S., Canada and
Europe. For more information, see p. 18.
References
1. Kauvar DS, Lefering R, Wade CE. Impact of hemorrhage on trauma
outcome: an overview of epidemiology, clinical presentations, and
therapeutic considerations. J Trauma. 2006;60(6 Suppl):S3–S11.
2. PHTLS: Prehospital Trauma Life Support, Military Version. Elsevier
Science Health Science Division: Miamisburg, OH, 2006).
3. Shapiro MB, Jenkins DH, Schwab CW, et al. Damage control: collective review. J Trauma. 2000;49(5):969–978.
4. Perkins J, Beekley A. Damage control resuscitation. In Savitsky E,
Eastridge B (Eds). Combat Casualty Care: Lessons Learned from
OEF and OIF. Office of the Surgeon General, Department of the
Army: Fort Detrick, Md., 121-164, 2012.
5. Alam HB, Uy GB, Miller D, et al. Comparative analysis of hemostatic
agents in a swine model of lethal groin injury. J Trauma.
2003;54:1,077–1,082.
6. Wedmore I, McManus JG, Pusateri A E, et al. The chitosan-based
hemostatic dressing: Experience in current combat operations. J
Trauma. 2006;60(3):655–658.
7. Holcomb J, MacPhee M, Hetz S, et al. Efficacy of a dry fibrin sealant
dressing for hemorrhage control after ballistic injury. Arch. Surg.
1998;133: pp.32–35.
8. Pusateri AE, Holcomb JB, Harris R A, et al. Effect of fibrin bandage
fibrinogen concentration on blood loss after grade V liver injury
in swine. Mil. Med. 2001;166:217–222.
9. King D, Cohn S, Schreiber M et al. A Modified Rapid Deployment
Hemostat Bandage: Surgeon Experience at Level 1 Trauma
Centers. General Surgery News. 2010;37(2). Retrieved 9/6/13
from www.generalsurgerynews.com/ViewArticle.aspx?d_
id=77&a_id=14637.
10. McManus J, Wedmore I. Modern Hemostatic Agents for Hemorrhage Control – A Review and Discussion of Use in Current
Combat Operations. Emergency Medicine & Critical Care.
2005:76–79. Retrieved 9/6/13 from www.touchemergencymedicine.com/articles/modern-hemostatic-agents-hemorrhagecontrol-review-and-discussion-use-current-combat-operat.
11. Alam HB, Burris D, DaCorta JA et al. Hemorrhage control in
the battlefield: role of new hemostatic agents. Mil Med.
2005;170(1):63–69.
12. Millner R, Lockhart AS, Marr R. Chitosan arrests bleeding in
major hepatic injuries with clotting dysfunction: an in vivo
experimental study in a model of hepatic injury in the presence
of moderate systemic heparinisation. Ann R Coll Surg Engl.
2010;92(7):559–561
13. Köksal O, Ozdemir F, Cam Etöz B, et al. Hemostatic effect of a
chitosan linear polymer (Celox®) in a severe femoral artery
bleeding rat model under hypothermia or warfarin therapy. Ulus
Travma Acil Cerrahi Derg. 2011;17(3):199–204.
14. Littlejohn LF, Devlin JJ, Kircher SS, et al. Comparison of Celox-A,
ChitoFlex, WoundStat, and combat gauze hemostatic agents
versus standard gauze dressing in control of hemorrhage
in a swine model of penetrating trauma. Acad Emerg Med.
2011;18(4):340–350.
15. Combat Application Tourniquet. U.S. Army Medical Department
Medical Research and Materiel Command. Retrieved 9/6/13
from www.usamma.amedd.army.mil/assets/docs/CAT.pdf.
16. Kragh JF, Murphy C, Dubick MA et al. New tourniquet device
concepts for battlefield hemorrhage control. US Army Med
Dep J. 2011;38–48.
Training Focus, Adjuncts & Approaches
With all these new options, training can prove to
be overwhelming. First, EMS providers should
be well versed and competent with the basic techniques of direct pressure, elevation and splinting.
Providers must properly demonstrate the basics
on manikins or simulators, and also on each
other where safe and applicable. Artificial skin/
body organ props can be obtained to augment
your training. Ideally, training should include
live tissue active bleeding. Students should use
training devices in a realistic setting to ensure
proper understanding of the limitations of these
products and to practice their use under stress.
Simulated bleeding, whether via high-fidelity
simulation or flow-generating cadaveric specimens, often isn’t practical because the hemostatic products require the elements in fresh
blood to work—something that can be obtained
only from animal subjects or human victims.
However, a recent product that offers realism
to training is LUNA’s TrueClot Blood Simulant.
This non-toxic, non-stain, realistic “blood” actually clots when used in conjunction with simulated wound clot dressings and the iTClamp.
Unlike hemostatic agents, devices that work
through a compressive mechanism such as tourniquets, the CRoC, and the iTClamp can be
taught through the use of high-fidelity simulation (HFS). Models that are capable of generating
arterial level pressures and flow can serve as good
trainers. Emphasis on proper placement, technique and complications is important, and HFS
is capable of meeting these requirements.
My experience is that, despite the high quality
of these simulators, they don’t impart the same
sense of confidence as cadavers and live tissue.
Although cadaveric training is more expensive,
I believe it provides the best training available,
resulting in the best retention and highest skill
level, and ensuring the most appropriate use of
devices and techniques.
As with any techniques or tool, it must be used
as part of the overall care of the patient, and any
training should include the additional principles
of body heat retention and avoidance of acidosis. ✚
DECEMBER2013
23
FAST. SAFE. EFFECTIVE.
TM
Introducing an innovative breakthrough in hemorrhage control! The iTClamp is
a trauma clamp device for the temporary control of severe bleeding. The device
seals the edges of a wound closed to create a stable clot to mitigate further blood
loss until the wound can be surgically repaired. Pre-clinical trials showed the
iTClamp to be superior to wound packing in terms of patient survival, survival
time and total blood loss.1 Applied within seconds, the iTClamp is ideal for
emergency medical personnel.
Visit iTraumaCare.com, email us at [email protected] or call
1-855-774-4526, option 3 and ﬁnd out more.
iTClampTM50 Hemorrhage
Control Device
iTraumaCare.com
The iTClampTM50 device is currently for sale in the United States, European Union and Canada.
1 Filips D, Logsetty S, Tan J et al. The iTClamp controls junctional bleeding in a lethal swine exsanguination model.
Prehospital Emergency Care 2013;17:526–532

Putting the Clamp on Hemorrhage

Transcription

Similar documents

Exsanguination - Northern Health

(TIPSY) Program - St. Michael`s Hospital

Understanding Glanzmann`s Thrombasthenia

Kirkland_EwoundCareS

(Microsoft PowerPoint - 970418\244\362\253a\263\354 cavernous

Trauma for the OD: A Case Management Approach

Online Presentation Gen Next 2 0

5/13/2013 1 Wendy L. Jackson MD University of

Presentation - Children`s Memorial Hermann Hospital